/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2021 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"
#include "gpio.h"
#include "fsmc.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include "usbd_cdc_if.h"

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define MY_GET_TICK() printf("tick: %d\r\n", HAL_GetTick())

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
volatile uint8_t MY_USB_OK;

#define EXT_SRAM_ADDR ((uint32_t)0x68000000)
#define EXT_SRAM_SIZE (1 * 1024 * 1024)

uint32_t bsp_TestExtSRAM(void);

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
 * @brief  The application entry point.
 * @retval int
 */
int main(void)
{
    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration--------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_USB_DEVICE_Init();
    MX_FSMC_Init();
    /* USER CODE BEGIN 2 */
    while (!MY_USB_OK)
        ;
    MY_USB_OK = 0;
    printf("STM32F407ZG FSMC SRAM Test By Mculover666\r\n");
    if (bsp_TestExtSRAM() == 0)
    {
        printf("SRAM Test success\r\n");
    }
    else
    {
        printf("SRAM Test fail\r\n");
    }
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
    }
    /* USER CODE END 3 */
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    /** Configure the main internal regulator output voltage
     */
    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    /** Initializes the RCC Oscillators according to the specified parameters
     * in the RCC_OscInitTypeDef structure.
     */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 4;
    RCC_OscInitStruct.PLL.PLLN = 168;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
    RCC_OscInitStruct.PLL.PLLQ = 7;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        Error_Handler();
    }
    /** Initializes the CPU, AHB and APB buses clocks
     */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
    {
        Error_Handler();
    }
}

/* USER CODE BEGIN 4 */
int fputc(int ch, FILE *f)
{
    while (!(CDC_Transmit_FS((uint8_t *)&ch, 1) == USBD_OK))
        ;
    return ch;
}
/*
*********************************************************************************************************
*	函 数 名: bsp_TestExtSRAM
*	功能说明: 扫描测试外部SRAM的全部单元。
*	形    参: 无
*	返 回 值: 0 表示测试通过；
*大于0表示错误单元的个数。
*********************************************************************************************************
*/
uint32_t bsp_TestExtSRAM(void)
{
    uint32_t i;
    uint32_t *pSRAM;
    uint8_t *pBytes;
    uint32_t err;
    const uint8_t ByteBuf[4] = {0x55, 0xA5, 0x5A, 0xAA};

    /* 写SRAM */
    pSRAM = (uint32_t *)EXT_SRAM_ADDR;
    for (i = 0; i < EXT_SRAM_SIZE / 4; i++)
    {
        *pSRAM++ = i;
    }

    /* 读SRAM */
    err = 0;
    pSRAM = (uint32_t *)EXT_SRAM_ADDR;
    for (i = 0; i < EXT_SRAM_SIZE / 4; i++)
    {
        if (*pSRAM++ != i)
        {
            err++;
        }
    }
    printf("SDRAM check round 1 error = %d\r\n", err);
    if (err > 0)
    {
        return (4 * err);
    }

#if 1
    /* 对SRAM 的数据求反并写入 */
    pSRAM = (uint32_t *)EXT_SRAM_ADDR;
    for (i = 0; i < EXT_SRAM_SIZE / 4; i++)
    {
        *pSRAM = ~*pSRAM;
        pSRAM++;
    }

    /* 再次比较SRAM的数据 */
    err = 0;
    pSRAM = (uint32_t *)EXT_SRAM_ADDR;
    for (i = 0; i < EXT_SRAM_SIZE / 4; i++)
    {
        if (*pSRAM++ != (~i))
        {
            err++;
        }
    }

    printf("SDRAM check round 2 error = %d\r\n", err);
    if (err > 0)
    {
        return (4 * err);
    }
#endif

    /* 测试按字节方式访问, 目的是验证 FSMC_NBL0 、 FSMC_NBL1
     * 口线
     */
    pBytes = (uint8_t *)EXT_SRAM_ADDR;
    for (i = 0; i < sizeof(ByteBuf); i++)
    {
        *pBytes++ = ByteBuf[i];
    }

    /* 比较SRAM的数据 */
    err = 0;
    pBytes = (uint8_t *)EXT_SRAM_ADDR;
    for (i = 0; i < sizeof(ByteBuf); i++)
    {
        if (*pBytes++ != ByteBuf[i])
        {
            err++;
        }
    }
    printf("SDRAM check round 3 error = %d\r\n", err);
    if (err > 0)
    {
        return err;
    }
    return 0;
}

/* USER CODE END 4 */

/**
 * @brief  This function is executed in case of error occurrence.
 * @retval None
 */
void Error_Handler(void)
{
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    __disable_irq();
    while (1)
    {
    }
    /* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT
/**
 * @brief  Reports the name of the source file and the source line number
 *         where the assert_param error has occurred.
 * @param  file: pointer to the source file name
 * @param  line: assert_param error line source number
 * @retval None
 */
void assert_failed(uint8_t *file, uint32_t line)
{
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
       ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
